FreeBSD/Linux Kernel Cross Reference
sys/dev/mvme/pcctwo.c

     /*      $NetBSD: pcctwo.c,v 1.8 2008/04/28 20:23:54 martin Exp $        */
     
     /*-
      * Copyright (c) 1999, 2002 The NetBSD Foundation, Inc.
      * All rights reserved.
      *
      * This code is derived from software contributed to The NetBSD Foundation
      * by Steve C. Woodford.
      *
     * Redistribution and use in source and binary forms, with or without
     * modification, are permitted provided that the following conditions
     * are met:
     * 1. Redistributions of source code must retain the above copyright
     *    notice, this list of conditions and the following disclaimer.
     * 2. Redistributions in binary form must reproduce the above copyright
     *    notice, this list of conditions and the following disclaimer in the
     *    documentation and/or other materials provided with the distribution.
     *
     * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
     * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
     * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
     * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
     * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
     * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
     * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
     * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
     * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
     * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
     * POSSIBILITY OF SUCH DAMAGE.
     */
    
    /*
     * PCCchip2 and MCchip Driver
     */
    
    #include <sys/cdefs.h>
    __KERNEL_RCSID(0, "$NetBSD: pcctwo.c,v 1.8 2008/04/28 20:23:54 martin Exp $");
    
    #include <sys/param.h>
    #include <sys/kernel.h>
    #include <sys/systm.h>
    #include <sys/device.h>
    
    #include <sys/cpu.h>
    #include <sys/bus.h>
    
    #include <dev/mvme/pcctworeg.h>
    #include <dev/mvme/pcctwovar.h>
    
    /*
     * Global Pointer to the PCCChip2/MCchip soft state, and chip ID
     */
    struct pcctwo_softc *sys_pcctwo;
    
    int pcctwoprint(void *, const char *);
    
    
    /* ARGSUSED */
    void
    pcctwo_init(sc, pd, devoff)
            struct pcctwo_softc *sc;
            const struct pcctwo_device *pd;
            int devoff;
    {
            struct pcctwo_attach_args npa;
            u_int8_t cid;
    
            /*
             * Fix up the vector base for PCCChip2 Interrupts
             */
            pcc2_reg_write(sc, PCC2REG_VECTOR_BASE, sc->sc_vecbase);
    
            /*
             * Enable PCCChip2 Interrupts
             */
            pcc2_reg_write(sc, PCC2REG_GENERAL_CONTROL,
                pcc2_reg_read(sc, PCC2REG_GENERAL_CONTROL) | PCCTWO_GEN_CTRL_MIEN);
    
            /* What are we? */
            cid = pcc2_reg_read(sc, PCC2REG_CHIP_ID);
    
            /*
             * Announce ourselves to the world in general
             */
            if (cid == PCCTWO_CHIP_ID_PCC2)
                    printf(": Peripheral Channel Controller (PCCchip2), Rev %d\n",
                        pcc2_reg_read(sc, PCC2REG_CHIP_REVISION));
            else
            if (cid == PCCTWO_CHIP_ID_MCCHIP)
                    printf(": Memory Controller ASIC (MCchip), Rev %d\n",
                        pcc2_reg_read(sc, PCC2REG_CHIP_REVISION));
    
            /*
             * Attach configured children.
             */
            npa._pa_base = devoff;
            while (pd->pcc_name != NULL) {
                    /*
                     * Note that IPL is filled in by match function.
                    */
                   npa.pa_name = pd->pcc_name;
                   npa.pa_ipl = -1;
                   npa.pa_dmat = sc->sc_dmat;
                   npa.pa_bust = sc->sc_bust;
                   npa.pa_offset = pd->pcc_offset + devoff;
                   pd++;
   
                   /* Attach the device if configured. */
                   (void) config_found(&sc->sc_dev, &npa, pcctwoprint);
           }
   }
   
   int
   pcctwoprint(aux, cp)
           void *aux;
           const char *cp;
   {
           struct pcctwo_attach_args *pa;
   
           pa = aux;
   
           if (cp)
                   aprint_normal("%s at %s", pa->pa_name, cp);
   
           aprint_normal(" offset 0x%lx", pa->pa_offset - pa->_pa_base);
           if (pa->pa_ipl != -1)
                   aprint_normal(" ipl %d", pa->pa_ipl);
   
           return (UNCONF);
   }
   
   /*
    * pcctwointr_establish: Establish PCCChip2 Interrupt
    */
   void
   pcctwointr_establish(vec, hand, lvl, arg, evcnt)
           int vec;
           int (*hand)(void *), lvl;
           void *arg;
           struct evcnt *evcnt;
   {
           int vec2icsr;
   
   #ifdef DEBUG
           if (vec < 0 || vec >= PCCTWOV_MAX) {
                   printf("pcctwo: illegal vector offset: 0x%x\n", vec);
                   panic("pcctwointr_establish");
           }
           if (lvl < 1 || lvl > 7) {
                   printf("pcctwo: illegal interrupt level: %d\n", lvl);
                   panic("pcctwointr_establish");
           }
           if (sys_pcctwo->sc_vec2icsr[vec] == -1) {
                   printf("pcctwo: unsupported vector: %d\n", vec);
                   panic("pcctwointr_establish");
           }
   #endif
   
           vec2icsr = sys_pcctwo->sc_vec2icsr[vec];
           pcc2_reg_write(sys_pcctwo, VEC2ICSR_REG(vec2icsr), 0);
   
           /* Hook the interrupt */
           (*sys_pcctwo->sc_isrlink)(sys_pcctwo->sc_isrcookie, hand, arg,
               lvl, vec + sys_pcctwo->sc_vecbase, evcnt);
   
           /* Enable it in hardware */
           pcc2_reg_write(sys_pcctwo, VEC2ICSR_REG(vec2icsr),
               VEC2ICSR_INIT(vec2icsr) | lvl);
   }
   
   void
   pcctwointr_disestablish(vec)
           int vec;
   {
   
   #ifdef DEBUG
           if (vec < 0 || vec >= PCCTWOV_MAX) {
                   printf("pcctwo: illegal vector offset: 0x%x\n", vec);
                   panic("pcctwointr_disestablish");
           }
           if (sys_pcctwo->sc_vec2icsr[vec] == -1) {
                   printf("pcctwo: unsupported vector: %d\n", vec);
                   panic("pcctwointr_establish");
           }
   #endif
   
           /* Disable it in hardware */
           pcc2_reg_write(sys_pcctwo, sys_pcctwo->sc_vec2icsr[vec], 0);
   
           (*sys_pcctwo->sc_isrunlink)(sys_pcctwo->sc_isrcookie,
               vec + sys_pcctwo->sc_vecbase);
   }
   
   struct evcnt *
   pcctwointr_evcnt(lev)
           int lev;
   {
   
           return ((*sys_pcctwo->sc_isrevcnt)(sys_pcctwo->sc_isrcookie, lev));
   }

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